That’s fine if the current job she has is as far as she wants to go . Remote workers should never expect a promotion. I always advise young people to go to the office and get to know the bosses . That’s how you get noticed and promoted .
lol. My old supervisor worked 95% remote. Got a promotion just fine.
You get noticed and promoted by getting your work done and in high quality.
When I first started at my former job I came early, stayed late. Did that for 3 years. Know what i got me? An unexplained "your services are no longer needed'
Sounds like you are very prejudice against remote workers.