wondering about a friend (tw, suicide)

(im asking in good faith about a friend im worried about, so if this isn't the place for that I apologize.)

okay, so a friend of mine w/ bipolar2 has withdrawn recently and that's fine, no biggie.

what's different this time is she isn't engaging in her normal, solo, online activities and she has had plenty of ideations of taking permanent actions against herself for years now, but things have become even more stressful for her recently and this new phase of "advanced" inactivity has got me worried.

thing is that I haven't known her for very long, but just long enough to be aware of a few past times when she's gone off the map for a bit, but i can always tell she's okay cuz she'll be playing games or sum and I won't bug he; she needs her space.

what I want to know is if its normal for some people to not only just withdraw, but do a BIG version of that where they just not engage with anything or anyone *at all* for any amount of time?

I want to reach out, but we had a bit of a fight and I dont want to push any boundaries but im also worried.