My friend has been feeling bad lately, should I send this text?

Should I text this to my friend? So my friend has been acting a bit distant lately (takes a long time to reply, like 1, 2 or 3 days, she even left me on read once, etc). She apologized on her own for being inactive and not feeling good as well (well I think that's what she meant). I'm glad that she took this initiative (I hadn't double texted her nor asked her why she wasn't replying, but well, it basically took her 3 days to reply to my previous text). She still hasn't read my reply, though (which I sent as soon as I woke up, so a few hours later). It's been a day already (well 23 hours, but still). Now, I am thinking of sending her this text (maybe tonight):

"Hey (name), I hope that you are doing well! I don't know what you're going through but as I said yesterday, I am here if you need someone to talk to. You're a good friend, and I understand if you need space. Anyway, I'm looking forward to chatting and/or watching films again! Take care, (name) 😉"
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My friend has been feeling bad lately, should I send this text?
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