I feel the vibe is off and she’s been distant. Has she lost interest or is this just the lock down blues?

I've been talking to someone since mid February. We've met up 4 times, with the last time I saw her being when she came over to my place, right before the lock down.

We've been talking all throughout the lock down, at least every day. The first 2 weeks of the lock down were normal. She'd reply enthusiastically and her responses were in a realistic time frame. We'd talk throughout the day. Even at night saying good night to each other.

I've noticed something change throughout the last month. Texts have become more sporadic, with her sometimes not replying for 8+ hours. Replies have been a little more bland. The good night texts no longer happen and she'll just leave me hanging until the next day,

At first I thought maybe she's just feeling bad due to the lock down, because she does work at a hospital.

However, I notice she is active on Facebook throughout the day. When I log in to facebook or messenger, I notice she is either active at the time or what active not too long ago, yet my texts continue to be ignored. (I message through regular iMessage)

She will eventually respond, but it's all been sporadic the last month.

What makes it weirder is that she will sometimes send me articles/videos, or send me video clips of something. Or there will be a string where we have an actual conversation and she's replying right away, and then in an instant it will go back to the distant behavior for the rest of the week.

Not really sure what to do. Part of me wants to ask if everything is ok and that I noticed a change in communication, but I don't want to push it.

Another part of me says to wait until lock down restrictions lift and then ask to see her again.