Do you think it's rude to get a message from someone but don't reply, yet you're online since you're updating your status? Are they being rude?

[NoUsername]

Honestly, I understand not wanting to talk to other people and go about your business on social media but this is an important topic about living arrangements... so its kinda rude for her to ignore you after 3 attempts, especially since she's including you in her lie to her mom. Idk if you're comfortable but why not call her or talk to her in person, at least that way she cant ignore you?