So the crew is tracking down their stolen ship today. But i just found out the ships owner cant make it today due to illness. Soim trying to get ahold of her key stats or a copy of her sheet. But if not, what other direction can i go?

Without too much detail, other obligations are debt, betrayal, blackmail, criminal, bounty, obsession.

The missing player has the rest of the crew waiting in a bar while they meet with someone who has information...they just need to wait because the contact is very nervous. While waiting they are pretty sure that there is a bounty hunter, Imperial officer, Black Sun operrative (whatever fits your game) that recognizes them and they can't stay here too long.

Make it chase through the city, kind of like old movie The Warriors...they have to find a place to lay low, not get killed or taken AND meet back up with the owner of the ship...

Side-quest time. Interject an NPC that's a friend of the party who has a problem that needs solving immediately. Getting their ship back will just have to wait.

What does their obligation(s) look like? That's the first place I look when I'm stuck or need to pad some time.

Pash: "This reminds me of that time when..."

[adventure is played that actually would have occurred much earlier in the campaign (ignore the fact XP is out of sync - memory playing tricks!)]

Oskara: "Pash, that story doesn't help at all with our current problem. All you've done is waste our time reminding us about something almost all of us were all present for." [shakes her head] "Idiot."