Is this a normal cycle for a phal?

[floranewb206]

Kinda confused about this flower's behavior, I can't tell if it's ok or if something's wrong! Conflicting signs.

First day I bought it: no wilting flowers, healthy buds.
Over the first week all buds bloomed but a few older flowers did wilt.
A few days ago more flowers started to wilt, and two buds also wilted. Looked kinda sad...
So 2 days ago watered it (no fertiliser) with plain water because the roots were silver/dry bark after 7 days since last watering (with fertiliser) two buds had wilted that day
Yesterday one bud bloomed over night and looks perfectly fine. The last bud looks fine too.

Now this morning two tiny bright pink buds have formed. Did it really just want water or what!? Cause I thought they are fine without water for awhile...

I just inspected it thoroughly and one leaf has a tiny hole in it. One root sticking out is flat and brown half way, but the other half is green and hard. The little tiny roots attached to the plant are brown but bright green at the tips.