No, a repeat is not a sign she liked you. Tinder's own help page gives two causes, and neither involves her interest in you: she deleted her account and came back, or you swiped through her card on a poor network connection. Other things can cause it too, and none of them are a signal you can act on.

The two reasons Tinder gives

Tinder says you may see a profile again if the person deleted their account and then returned, or if you were swiping on a poor connection.

The first is about her. She left the app, maybe after a bad month or a relationship that ended, and signed up again later. On the app's side she can look like a new user, so her card can reach your stack again even if you passed on her last time.

The second is about your phone. On a train between stations, in an elevator, or at the edge of a café's Wi-Fi, a swipe may not register properly, and the card comes back.

Why it doesn't mean she liked you

It's a nice idea that the app brings back women who swiped right on you. Nothing from Tinder says so. Its two stated causes are a returning account and a weak signal, and neither one is a signal that she saw your profile.

If you want to know whether she liked you, there's one clean way: swipe right and see whether you match. A repeat won't tell you.

Other causes you can't confirm

Some other reasons are possible, though the app doesn't state them, so treat them as guesses.

A small local pool. If you've set a narrow age range or a short distance, you may have seen most of the people nearby. Once you run low, faces come around again. Widening your settings or waiting a few weeks usually brings new people.

Someone rebuilding their profile on purpose. Some users delete and re-upload their profiles to reappear in front of people who passed. That's a person's tactic, not a sign aimed at you.

An accidental swipe. Your thumb slips, the card disappears, and later you see it again.

None of these needs a response. They're just the reason the stack looks familiar.

What to do on the second look

You have a decision to make, and it's simpler than it feels.

If you passed in a hurry. Men make fast calls in a stack, sometimes on one photo. A second look is a chance to read the whole page. Check her other photos and her bio for something specific you'd want to ask about. If you find it, swipe right.

If you passed for a reason. Then the reason hasn't changed, and a pass is still a pass. Move on in two seconds.

If you matched and nothing happened. That one's different from a repeat. If a match never replied, one short message is fine. Don't send a third.

If her page looks different. A new photo or a rewritten bio can change your answer, so judge the page in front of you, not your memory of the old one.

If the repeats are constant

Stop and check two things before you assume the app is broken. First, your connection: do your swiping on strong signal and give each card a second instead of flicking through. Second, your settings: if the pool is small, widen it.

If the same faces keep returning every session even after that, you've likely run through your area for now. Take a few days off. A fresh session in a week or two will show different people.

A returning woman is a reminder about your own page

If she passed on you once, the same page won't change her mind. A better one might. Check your first photo: a clear, recent shot of your face in good light. Check that the others show you in different places. And check your bio gives one specific thing a woman could picture and ask about.

That matters far more than whether any one face repeats.