What would you do if a friend stopped talking to you for several months?

I got a friend who hasn’t made any efforts to connect to me since like May. I’m not the type of person to text my friends everyday or every week anyways, so I don't know why she stopped altogether as if we were never friends. Sure, breaks are chill and sometimes I don’t talk to friends for a month or longer, but in her case she has stopped reaching out completely for several months and the only interaction she gives me is likes on IG. Last time I checked in with her in June, and jokingly asked why she is so quiet. She replied with an amicable tone apologizing and said she’s caught up with work and school. I was like alright, but still thought that was a weird excuse. She hasn’t reached out to me again since June either, even after I discreetly pointed out she’s being passive.

what to do then? I don’t think texting her again is a good idea. I’m either gonna pretend she was never my friend or block her so that I don’t have to keep thinking about why she’s being distant.
What would you do if a friend stopped talking to you for several months?
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